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Link zlib and libpng statically by default

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Only when we are building them ourselves, that is.
This commit is contained in:
ISSOtm
2026-05-14 01:06:16 +02:00
committed by Eldred Habert
parent 42e3da837c
commit fee177d0b9
2 changed files with 10 additions and 6 deletions
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CMakeLists.txt
+4
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@@ -118,6 +118,10 @@ FetchContent_MakeAvailable(ZLIB)
if(NOT DEFINED ZLIB_INCLUDE_DIRS)
set(ZLIB_INCLUDE_DIRS "${zlib_BINARY_DIR};${zlib_SOURCE_DIR}") # libpng's `genout` script relies on this variable to be set.
endif()
# Statically building zlib (from source) generates a target named differently.
if(NOT TARGET ZLIB::ZLIB AND TARGET zlibstatic)
add_library(ZLIB::ZLIB ALIAS zlibstatic)
endif()
if(NOT DEFINED PNG_TESTS) # Unless overridden (e.g. in the cache), we don't care about libpng's tests.
set(PNG_TESTS OFF)
cmake/deps.cmake
+6 -6
View File
@@ -8,10 +8,10 @@ FetchContent_Declare(PNG
EXCLUDE_FROM_ALL # We only install the runtime dependencies, and do so separately.
FIND_PACKAGE_ARGS 1.5.4)
set(PNG_TESTS OFF CACHE INTERNAL "") # We do not care for these two (and they can even cause compile errors!)
set(PNG_TOOLS OFF CACHE INTERNAL "")
set(PNG_SHARED ON CACHE INTERNAL "") # Upstream seems to favour the dynamic lib over the static one?
set(PNG_STATIC OFF CACHE INTERNAL "")
set(PNG_TESTS OFF CACHE INTERNAL "") # We do not need libpng's tests or tools
set(PNG_TOOLS OFF CACHE INTERNAL "") # (and they can even cause compile errors!)
set(PNG_SHARED OFF CACHE INTERNAL "")
set(PNG_STATIC ON CACHE INTERNAL "")
FetchContent_Declare(ZLIB
URL https://www.zlib.net/zlib-1.3.2.tar.xz
@@ -21,5 +21,5 @@ FetchContent_Declare(ZLIB
# We thus enforce 1.0.4, but note that the libpng source code mentions that "it may work with versions as old as zlib 0.95".
FIND_PACKAGE_ARGS 1.0.4)
set(ZLIB_BUILD_SHARED ON CACHE INTERNAL "")
set(ZLIB_BUILD_STATIC OFF CACHE INTERNAL "")
set(ZLIB_BUILD_SHARED OFF CACHE INTERNAL "")
set(ZLIB_BUILD_STATIC ON CACHE INTERNAL "")